GB/T 38842-2020 (English Version)

Scope: This standard gives the general characteristics of practical superconducting wires, and provides application guidelines for the testing methods of mechanical, electrical and superconducting properties of practical superconducting wires. Practical wire refers to a wire that can be continuously produced in commercial batches to a sufficient length and can be used to manufacture equipment. This standard pays particular attention to the characteristics of practical superconducting wires that are different from conventional copper and aluminum wires. This standard applies to a variety of superconducting wires described in 2.4 of GB/T2900.100-2017, including single-core and multi-core superconducting wires, composite superconductors and coated conductors, and composite superconducting wires with other integrated structures. This standard does not apply to wires other than practical superconducting wires (such as prototypes, samples and wires under development), and conductors composed of multiple wires (such as cables).

GB/T 38842-2020 Referenced Document

GB/T 18502 Critical current measurement—DC critical current of Ag-and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors
GB/T 21227 AC loss measurements—Magnetometer methods for hysteresis loss in superconducting multifilamentary composites*， 2021-05-21 Update
GB/T 21546 Critical current measurement.DC critical current of Nb -Ti composite superconductors
GB/T 22587 Matrix to superconductor volume ratio measurement.Copper to superconductor volume ratio of Cu/Nb-Ti composite superconducting wires
GB/T 30109 AC loss measurements.Total AC loss measurement of round superconducting wires exposed to a transverse alternating magnetic field at liquid helium temperature by a pickup coil method
GB/T 31522 Matrix to superconductor volume ratio measurement.Copper to non-copper volume ratio of Nb<下标3>Sn composite superconducting wires
GB/T 31780 Critical temperature measurement.Critical temperature of composite superconductors by a resistance method
GB/T 36611 Mechanical properties measurement—Room temperature tensile test of Ag-and/or Ag alloy-sheathed Bi-2223 and Bi-2212 composite superconductors
GB/T 38842-2020 Categories and test methods of practical superconducting wires—General characteristics and guidance
IEC 61788-4 Superconductivity - Part 4: Residual resistance ratio measurement - Residual resistance ratio of Nb-Ti and Nb3Sn composite superconductors

2020 GB/T 38842-2020 Categories and test methods of practical superconducting wires—General characteristics and guidance